Photoprotective implications of leaf variegation in E. dens-canis L. and P. officinalis L

Journal of Plant Physiology
Raquel EstebanJosé Ignacio García-Plazaola

Abstract

Variegated leaves occur rarely in nature, but there are some species, primarily in the forest understory, that possess this characteristic. We recently studied two variegated plants: Erytronium dens-canis L., which is characterised by a pattern of red patches and Pulmonaria officinalis L., with light green spots. These non-green areas could attenuate light reaching mesophyll cells with respect to green sections. The aim of the study was to verify whether such red and light green parts are more photoprotected than green ones and if this trait could be of adaptive value. Red patches in E. dens-canis were due to a single layer of red cells in the upper parenchyma, which accumulated anthocyanins. Light green spots in P. officinalis were caused by the presence of loosely arranged cells instead of a well-established layer of packed cells in the palisade parenchyma. Chlorophyll fluorescence imaging was performed under light treatment, showing a greater decrease of photochemical efficiency in red and light green patches than in green sections. Differences in the extent of photochemical efficiency among patches were not attributable to different activation of the xanthophyll cycle. These observations failed to confirm our initial hypoth...Continue Reading

References

Aug 19, 2000·Journal of Experimental Botany·K S GouldJ J Goris
Apr 12, 2001·Plant Physiology·P MüllerK K Niyogi
Nov 13, 2004·Journal of Plant Research·Hirokazu TsukayaMaryati Mohamed
May 17, 2006·Trends in Ecology & Evolution·H Martin Schaefer, David M Wilkinson
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Citations

Apr 20, 2010·Journal of Experimental Botany·Kevin S GouldHoward S Neufeld
Mar 1, 2012·Photochemistry and Photobiology·Adilson Pereira Domingues JúniorPaulo Mazzafera
Dec 3, 2013·Plant Physiology and Biochemistry : PPB·Nicoletta La RoccaNicoletta Rascio
Jan 31, 2009·Trends in Ecology & Evolution·Marco ArchettiHoward Thomas
Apr 30, 2015·AoB Plants·Beatriz Fernández-MarínJosé Ignacio García-Plazaola
Mar 1, 2012·Annals of Botany·Chiou-Rong SheueChing-I Peng
May 12, 2020·The New Phytologist·Ines Pena-Novas, Marco Archetti
Mar 1, 2016·Functional Plant Biology : FPB·Cyril AbadieGuillaume Tcherkez
Nov 6, 2020·Journal of Evolutionary Biology·Ines Pena-Novas, Marco Archetti

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